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Faeces Reveals Hippocrates' Parasites: The History News of the Week

Faeces Reveals Parasites Described by Hippocrates The first archaeological evidence of parasitic worms described in the works of Hippocrates has been discovered on the Greek island of Kea. Archaeologists made the discovery by examining faeces from prehistoric burials on the island. Evilena Anastasiou and Piers Mitchell, two researchers from the University of Cambridge, used microscopy to study soil formed from decomposed faeces recovered from the pelvic bones of skeletons buried in the fourth millennium BCE, second millennium BCE, and the Roman period between 146 BCE and 330CE. Athens based experts in Ancient Greek archaeology and anthropology Anastasia Papathanasiou and Lynn Schepartz worked with the Cambridge team on the project. The team found eggs from two species of parasitic worm (helmiths) were present: whipworm (Trichuris trichiura) and roundworm (Ascaris lumbricoides). Alive in the fifth and fourth centuries BCE, Hippocrates is regarded as a crucial pioneer in medical history. He developed the ground-breaking humoural theory to explain why people became ill. This theory, which stated that a healthy body had a balance of four humours, was the accepted model for explaining disease in Europe up until the seventeenth century. Hippocratic texts referred to intestinal worms known as Helmins strongyle, Ascaris and Helmins plateia. Until now, historians have had to rely on ancient written descriptions of these worms to try and determine exactly which parasites were afflicting the Ancient Greeks. The authors of this latest study, which has been published in the Journal of Archaeological Science: Reports, say that the new evidence identifies beyond doubt some of the parasites that infected people in the region. “The Helmins strongyle worm in the ancient Greek texts is likely to have referred to roundworm, as found at Kea. The Ascaris worm described in the ancient medical texts may well have referred to two parasites, pinworm and whipworm, with the latter being found at Kea,” said study leader Piers Mitchell, from Cambridge’s Department of Archaeology. “Until now we only had estimates from historians as to what kinds of parasites were described in the ancient Greek medical texts. Our research confirms some aspects of what the historians thought, but also adds new information that the historians did not expect, such as that whipworm was present”. Anastasiou explained the significance of the discovery. “Finding the eggs of intestinal parasites as early as the Neolithic period in Greece is a key advance in our field. This provides the earliest evidence for parasitic worms in ancient Greece.” Societies Evolve Along Similar Paths A major new study claims that human societies, from the Incas to modern Britain and China, have evolved along similar paths. The authors argue that despite the myriad differences between societies they tend to become more complex in “highly predictable ways”. To reach their conclusions, the international research team created a database of historical and archaeological information on 414 societies spread across a 10,000-year period. According to the researchers, this database is larger and more systematic than any that has been created before. “Societies evolve along a bumpy path – sometimes breaking apart – but the trend is towards larger, more complex arrangements,” said corresponding author Dr Thomas Currie, of the Human Behaviour and Cultural Evolution Group at the University of Exeter’s Penryn Campus in Cornwall, in a press release. “Researchers have long debated whether social complexity can be meaningfully compared across different parts of the world. Our research suggests that, despite surface differences, there are fundamental similarities in the way societies evolve. “Although societies in places as distant as Mississippi and China evolved independently and followed their own trajectories, the structure of social organisation is broadly shared across all continents and historical eras.” The team’s study has been published in the Proceedings of the National Academy of Sciences. Indonesian Island Contains a Treasure Trove of Cave Paintings A tiny Indonesian island has been found to be unusually rich in cave paintings, according to researchers from the Australian National University (ANU). 28 rock art sites dating from at least 2,500 years ago have been uncovered on the island of Kisar, which measures just 81 square kilometres and lies north of Timor-Leste. According to Sue O’Connor, a professor from ANU’s School of Culture, History and Language, and the lead archaeologist on the recent excavations, these paintings give insight into the region’s history of trade and culture. “Archeologically, no one has ever explored this small island before,” Professor O’Connor said. “These Indonesian islands were the heart of the spice trade going back for thousands of years. The paintings we found depict boats, dogs, horses and people often holding what look like shields. Other scenes show people playing drums perhaps performing ceremonies.” The paintings suggest a stronger shared history between Kisar and nearby Timor than previously thought. “The Kisar paintings include images which are remarkably similar to those in the east end of Timor-Leste,” O’Connor said. “A distinctive feature of the art in both islands is the exceptionally small size of the human and animal figures, most being less than 10 centimetres. Despite their size, however, they are remarkably dynamic.” Professor O’Connor believes that the relationship between the two islands extends back 3,500 years ago to the Neolithic period, which saw an influx of Austronesian settlers who introduced domestic animals and possibly cereal crops. Similarities between some of the painted figures and images cast on metal drums that started to be produced in northern Vietnam and southwest China about 2,500 years ago and traded through the region, suggest some of the paintings were more recent. “These paintings perhaps herald the introduction of a new symbolic system established about two thousand years ago, following on the exchange of prestige goods and the beginning of hierarchical societies,” O’Connor said. Featured image: This is the excavation of the site of Ayia Irini on the island of Kea, where the samples used in the study were found. Credit: Department of Classics, University of Cincinnati ]]>

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Ancient Faeces Shows Deadly Diseases Spread Along the Silk Road

Journal of Archaeological Science: Reports, the discovery made through rather unpleasant means is described as momentous. It has long been thought that the Silk Road could have been a conduit for transporting diseases between Asia and Europe. Now, a 2,000 year old latrine in Western China has provided the first archaeological evidence that this was indeed the case. The findings are likely to be game changers in the history of the origin and dispersal of disease, possibly expanding our understanding of the spread of the Black Death in Asia and Europe, as well as other lethal diseases such as anthrax and leprosy. Hui-Yuan Yeh and Piers Mitchell from Cambridge University used microscopy to analyse the faeces preserved on ancient personal hygiene sticks (used to clean the anus). The sticks were unearthed from the latrine at what was a major Silk Road relay station on the eastern border of the Tamrin Basin, a region that includes the Taklamakan Desert. The researchers believe the latrine dates from 111 BCE and was in use until 109 CE. Chinese researchers Ruilin Mao and Hui Wang from the Gansu Institute for Cultural Relics and Archaeology carried out the initial excavations at the site in Gansu province. The relay station was a popular one, used by travellers as a place to stay, and government officials as somewhere to change horses and deliver letters. Mao and Wang found the hygiene sticks with cloth wrapped around one end. Four eggs from four parasitic worms were present in the faeces studied: roundworm (Ascaris lumbricoides), whipworm (Trichuris trichiura), tapeworm (Taenia sp.), and Chinese liver fluke (Clonorchis sinensis). The Chinese liver fluke provided the key evidence that infectious diseases could be spread over thousands of miles. A parasitic flatworm that causes abdominal pain, diarrhoea, jaundice and liver cancer, Chinese liver fluke requires well-watered, marshy areas to complete its life cycle, nothing like the dry, arid, desert-like environment the relay station was situated in. The liver fluke is simply not endemic to this region, and must have come from elsewhere. At present, the closest endemic area to the relay station for the Chinese liver fluke is Dunhuang, around 1,500 km away. The species is most prevalent in Guandong Province, some 2,000 km from Dunhuang. The authors of the study, from Cambridge University’s Department of Archaeology and Anthropology, argue that the person infected with the liver fluke must have traveled a substantial distance while infected with the parasite. As such, the finding presents the earliest archaeological evidence of diseases being carried large distances along the Silk Road. “When I first saw the Chinese liver fluke egg down the microscope I knew that we had made a momentous discovery,” said Hui-Yuan Yeh, in a press release from Cambridge University. “Our study is the first to use archaeological evidence from a site on the Silk Road to demonstrate that travellers were taking infectious diseases with them over these huge distances.” First coming to prominence during the period of the Han Dynasty in China (202 BCE – 220 CE), the Silk Road allowed merchants, explorers, soldiers and officials to travel between East Asia and the Middle East/Eastern Mediterranean. The fact that similar strains of bubonic plague, anthrax and leprosy have been found in both China and Europe has led many researchers to suggest the Silk Road was the conduit that spread the diseases, but archaeological evidence supporting this theory had been lacking. “Until now there has been no proof that the Silk Road was responsible for the spread of infectious diseases. They could instead have spread between China and Europe via India to the south, or via Mongolia and Russia to the north,” said Piers Mitchell, one of the study authors. “Finding evidence for this species in the latrine indicates that a traveller had come here from a region of China with plenty of water, where the parasite was endemic. This proves for the first time that travellers along the Silk Road really were responsible for the spread of infectious disease along this route in the past.” Image courtesy of Hui-Yuan Yeh. Reproduced from the Journal of Archaeological Science: Reports.]]>